What is the mass in grams of 0.48 mol of platinum,Pt.?​

Answers

Answer 1

93.64 grams

Explanation:mass of platinum =number of moles x molar mass molar mass = atomic mass of any element ,0.48 ×195.084 = 93.64 grams


Related Questions

One long wire carries current 30.0 A to the left along the x axis. A second long wire carries current 50.0 A to the right along the line (y = 0.280m, z = 0). (a) Where in the plane of the two wires is the total magnetic field equal to zero?

Answers

[tex]Given: Current $30 \mathrm{~A}$ along $x$-axis to left $\left(I_1\right)$current $50 \mathrm{~A}$ along $\gamma$-axis $(0=z, y=0.280 \mathrm{~m})$ bo righta) Take a point $P$ at distance $x$ below $x$-axis$B=$ Magnelic field at $P$$B_D=\frac{\mu_0 I_1}{2 \pi x} \hat{k}+\frac{\mu_0 I_2}{2 \pi(0.28+x)}(-\hat{k})=0\left(\mu_0=4 \pi_{\times 10^{-7}} \mathrm{n} / \mathrm{m}\right)$[/tex][tex]$\frac{\mu_0 I_1}{2 \pi \alpha}=\frac{\mu_0 I_2}{2 \pi(0 \cdot 28+x)} \hat{k} \Rightarrow \frac{\mu_0 30}{2 \pi \alpha} \hat{k}=\frac{\mu_0^x 50}{2 \pi(0.28+x)} \hat{k}$$\Rightarrow x=0.42 \mathrm{~m}$[/tex]

What is magnetic field?

The magnetic impact on moving electric charges, electric currents, and magnetic materials is described by a magnetic field, which is a vector field. A force perpendicular to the charge's own velocity and the magnetic field acts on it while the charge is travelling through a magnetic field.  The magnetic field of a permanent magnet pulls on ferromagnetic substances like iron and attracts or repels other magnets. A magnetic field that varies with location will also exert a force on a variety of non-magnetic materials by changing the velocity of those particles' outer electrons. Electric currents, such those utilized in electromagnets, and electric fields that change in time produce magnetic fields that surround magnetized things.

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a ball is shot from the ground straight up into the air with initial velocity of 50 50 ft/sec. assuming that the air resistance can be ignored, how high does it go?

Answers

The height attained by the ball is 11.86m

a ball is shot from the ground straight up into the air its initial and final velocity is

initial velocity, u = 50 ft/s = 50×0.305  = 15.25m/s

final velocity ,v = 0 m/s

gravity =-9.8 m/s²

( negative sign shows acceleration in opposite direction)

height =?

using the newton motion of equation

v² = u² + 2as

where

a= acceleration due to gravity(g)

s = height

v² = u² + 2gs

(0)² = (15.25)² + 2×(-9.8)×s

0  = (15.25)² -  19.6 × s

s= - (15.25)²/ 19.6

s = 11.86m

after ignoring the air resistance the maximum height of the ball is 11.86m

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2 An air rifle pellet of mass 2 g is fired into a block of modelling clay mounted
on a model railway truck. The truck and modelling clay have a mass of
0.1 kg. The truck moves off after the pellet hits the modelling clay with an
initial velocity of 0.8 m/s.

State the momentum of the pellet just before it hits the modelling clay.
c Use your answers to a and b to calculate the velocity of the pellet just
before it hits the modelling clay.


d State any assumptions you made in this calculation.

Answers

The momentum of the pellet just before it hits the modelling clay is 0.0816 kg-m/s the velocity of the pellet just before it hits the modelling clay is 40m/s.

Assumption:

1)the pallet embeds into the clay.

A perfectly inelastic collision is one where the two objects that collide together become one object, losing the maximum amount of kinetic energy.

e=0

In perfectly inelastic collision the momentum is conserved.

given:

velocity of the truck + clay = 0.8m/s

mass of the truck + clay = 0.1 kg

mass of the pallet = 2g=0.002kg

a)

now since the example is of perfectly inelastic collision the momentum will be conserved .

i.e. momentum before collision  = momentum after collision

momentum of pallet =  momentum of( truck + clay)

momentum of pallet = (0.1+0.002)×0.8

momentum of pallet =0.0816 kg-m/s

b)

momentum before collision= mass of pallet ×velocity of pallet  + mass of truck × velocity of truck

velocity of pallet =0.0816/0.002

velocity of pallet =40m/s

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The charge per unit length on a long, straight filament is -90.0μC/m . Find the electric field (b) 20.0cm

Answers

The electric field for 20 cm is 8.09 MN/C

Length of the straight filament = (20cm) (1m/100cm) = 0.2

Electric field for the straight conductor = [tex]E = \frac{2k_{e} \lambda}{r}[/tex]

E = [2(8.99 × 10^9 N·m^2/C^2)(90.0 × 10^-6 C/m)] / 0.2 m

E = 8.09 MN/C

The electric field is directed radially inward, toward the filament.

The electric field is a force produced by a charge near its surroundings. This force is exerted on other charges when brought in the vicinity of this field. SI unit of the electric field is N/C (Force/Charge).

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a force of 8 lb8 lb is required to keep a spring compressed to 13 ft13 ft shorter than its equilibrium length. what is its spring constant? ????

Answers

The Spring constant (K) = 9 N/m.

We have a force of 8 lb is required to keep a spring compressed to 13 ft shorter than its equilibrium length.

We have to determine the Spring constant.

When the Spring is Compressed or Stretched the restoring force is directed towards?

The restoring force is directed towards the Equilibrium position.

According to the question, we have -

Force = 8 lb = 8 x 4.45 = 35.6 Newton.

Displacement = 13 ft = 3.96 meter.

Now -

The Restoring force = Applied force

Therefore -

|F| = Kx

35.6 = 3.96K

K = 8.99 = 9 N/m.

The Spring constant K = 9 N/m.

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)two spheres are touching each other. a charged rod is brought near. the spheres are then separated, and the rod is taken away. in the first case, the spheres are aligned with the rod, in the second case, they are perpendicular. after the charged rod is removed, which of the spheres is:

Answers

Positively charged rod acting as an attractor will cause spheres A and B's combined negative charges to gravitate toward sphere A. A and B's combined positive charge will concentrate in sphere B.

Since the spheres are oriented perpendicular to the rod, an equal force from the positively charged rod will pull the spheres' negative charges, C and D, towards the direction of the rod. However, they won't focus on just one area. There have been no charging movements.

A sphere may it be a perpendicular?

Any geometry where angles may be measured has a perpendicular. When two lines cross, they make a 90° angle. Lines have perpendiculars running through them at every point along the length of them in the majority of geometries (including spherical, Euclidean, hyperbolic, and others). The answer to your query is indeed true.

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A = 5 m/s N, B = 7 m/s at -25 degrees, C = 3 m/s N of W at 45 degrees

Find the resultant vector.

Answers

The resultant vector will be 29.5° E of N.

A = 5 m/s

B = 7 m/s at 25° NE

C = 3 m/s at 45° NW

To find the resultant vector for these given vectors,

first we need to resolve the vector B and C into X and Y direction respectively.

On resolution, vector gets distributed into its X-axis and Y-axis components.

Vector B has BCos25° as its X component and BSin25° as its Y component

Similarly, Vector C has CCos45° ac its X-axis component and CSin45° as its Y-axis component.

Now, the algebraic sum of the resolved parts of a series of forces in a particular direction is equal to the resolved part of their resultant in the same direction.

Σ along X-axis

= 5 + BCos25° - CCos45°

= 5 + 7(0.92) - 3(0.76)

= 5 + 6.44 - 2.28

Fx = 9.16 m/s

Σ along Y-axis

= BSin25° + CSin45°

= 7(0.38) + 3(0.64)

= 2.66 + 1.92

Fy = 4.58 m/s

The direction of the resultant vector is given by calculating Tan[tex]\alpha[/tex]

Here Tan[tex]\alpha[/tex] = [tex]\frac{P}{B\\}[/tex]

Tan[tex]\alpha[/tex] = [tex]\frac{4.58}{9.16}[/tex]

Tan[tex]\alpha[/tex] = 0.5

[tex]\alpha[/tex] = Tan⁻¹(0.5)

[tex]\alpha \\[/tex] = 29.5° with the X-axis

Magnitude of the resultant vector can be calculated by

= [tex]\sqrt{Fx^{2} +Fy^{2} +FxFyCos\alpha }[/tex]

= [tex]\sqrt{9.16^{2} +4.58^{2}+ 9.16*4.58*Cos29.5 }[/tex]

= 11.93 m/s

Therefore the resultant vector will be having 11.93 m/s as magnitude directing 29.5° from East to North.

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The name of the festival or custom​

Answers

Answer: harvest moon

During the harvest season, they would worship the full moon, giving thanks for a plentiful harvest. The women in each family would prepare a table full of newly harvested rice and fruit, in an ancient tradition called 'charye. ' The origins of Chuseok can be traced back to this custom.

ceremonies

hope this helps

How are variations passed on from one generation to the next

Answers

Answer:

Inheritance

Explanation:

Passing of genetic material to offspring over the next generations

nerve impulses are carried along axons, the elongated fibers that transmit neural signals. we can model an axon as a tube with an inner diameter of 10 μm. the tube wall is insulated, but the fluid inside it has a resistivity of 0.50 ω⋅m.

Answers

here,

the inner diameter , d = 10 um = 10 * 10^-6 m

radius , r = d/2 = 5 * 10^-6 m

resistivity , p = 0.5 ohm.m

length , l = 6 mm = 0.006 m

the resistance , R = p * l /area

R = p * l /( pi * r^2)

R = 0.5 * 0.006 /(pi * ( 5 * 10^-6)^2) ohm

R = 3.82 * 10^7 ohm (Answer)

the resistance of a wire is 3.82 * 10^7 ohm

Neurons, or nerve cells that transmit nerve impulses, consist of a cell body, an axon, and a few dendrites. Signals travel through synapses, where the axon of one neuron meets the dendrites of another neuron, using chemicals called neurotransmitters.

An electrical signal that travels along a nerve fiber in response to a stimulus and conveys the recording of sensations from receptors or instructions to effectors: Propagation of an action potential along the length of a neuron.

Differential charges across the plasma membrane of neurons generate nerve impulses. How does this charge difference come about? The response contains ions, which are charged atoms or molecules.

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A conductor carrying a current I = 15.0 A is directed along the positive x axis and perpendicular to a uniform magnetic field. A magnetic force per unit length of 0.120 N/m acts on the conductor in the negative y direction. Deter- mine (b) the direction of the magnetic field in the region through which the current passes.

Answers

The magnitude of the magnetic field in the region through the current passes is 8×10⁻³  T.

What is a magnetic field?

The magnetic field is defined as the field the magnetic materials generate or when an electric charge moves in a field region that generates the magnetic field.

It is given that:

A conductor carrying a current I = 15.0 A is directed along the positive x-axis and perpendicular to a uniform magnetic field.

As we know,

F = ilB

i = 15 A
F/l = 0.120 N/m

B = (F/l)(1/i)

B = 0.120(1/15)

B = 8×10⁻³  T

Thus, the magnitude of the magnetic field in the region through the current passes is 8×10⁻³  T.

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please help asap times!! thank tub in advance!

Answers

As the speed of the object increases, the fluid resistance increases.

What is fluid resistance?

The fluid resistance is what could otherwise be referred to as the drag force. This is the force that inhibits the object from moving through the fluid. Thus it drags the object and prevents its motion.

This fluid resistance is caused by the layers of the fluid as the object moves through the fluid. As the speed of the object increases, the fluid resistance increases.

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25. Calculating
A triathlete enters a race in which
he swims 500 meters, runs 3000 meters, and
cycles 10.0 kilometers. What is the total distance
of the race in kilometers?

-I NEED HELP PLEASE! I BEGGGGG

Answers

Answer:

3,510 po yung sagot pa brainliest po

Explanation:

By adding the distances for cycling, running, and swimming, the total race distance can be determined. The distance covered by him is 13.5 km.

Converting all the distances to the same unit before combining them because the triathlete swims 500 meters, runs 3000 meters, and cycles 10.0 kilometers.

Divide 500 meters by 1000 to get kilometers: 500 meters divided by 1000 equals 0.5 kilometers.

Divide 3000 meters by 1000 to get 3 kilometers: 3000 meters divided by 1000.

The triathlete completes a 0.5-kilometer swim, a 3-kilometer run, and a 10.0-kilometer bike ride.

Now that the distances have been added, the total is 13.5 kilometers: 0.5 kilometers for swimming, 3 kilometers for running, and 10.0 kilometers for cycling.

Consequently, the race's overall length is 13.5 kilometers.

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How much energy is required to change a 40.0-g ice cube from ice at -10.0°C to steam at 110°C ?

Answers

The amount of heat required to warm the ice is 38.317 KJ

What is specific heat capacity ?

In scientific terms, a specific heat capacity is the quantity of heat (J) absorbed by a material every time its temperature goes up 1 K (or 1 °C), given in J/(kg K) or J/(kg °C) per unit mass. formulae for specific heat capacity is given by

Given data:

The mass of ice is, m = 40.0 g.

The initial temperature is, T = - 10 degree Celsius.

The final temperature is, T' = 110.0 degree Celsius.

The heat capacity of ice is, c = 2.09 J/g C.

The heat capacity of steam is, c' = 2.01 J/g C.

When ice absorbs heat, the conversion takes place from ice to water (liquid) and from the liquid to steam at 110 degree Celsius. So,

The amount of heat absorbed is given as,

Q = m[c(T' - T) + c'T']

Q = 40[2.09 x (110-(-10)) + 2.01 x (110+273))]

Q = 38,317.2 J

Convert in kJ as,

Q = 38,317.2/1000

Q = 38.317 kJ

Thus, we can conclude that the amount of heat required to warm the ice is  38.317 kJ.

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How long did it take Fernando to drive to
Kroger if he went west at a constant rate of 30
m/s. Assume Kroger was located 1680 m away.

Answers

How do you calculate distance over speed?
Image result for if your going 30 m/s to go somewhere thats 1680 miles away
The formula can be rearranged in three ways:
speed = distance ÷ time.
distance = speed × time.
time = distance ÷ speed.

1680÷30 = 56

So it would take around 56 minutes to get to Kroger.


I hope this helps !! :)

Speed is a scalar quantity that describes "how fast an object is moving." The rate at which an object travels a distance can be thought of as its speed. The time taken by Fernando is 56 s.

Speed is only the rate at which motion changes. Or just the distance a body travels in a unit of time. Velocity is the rate at which an object's position changes and it takes direction into account. Speed has just magnitude because it is a scalar quantity.

The expression used to calculate speed is:

Speed = Distance / Time

Time = Distance / Speed

t = 1680 / 30

t = 56 s

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Imagine that the entire Sun, of mass MS , collapses to a sphere of radius Rg such that the work required to remove a small mass m from the surface would be equal to its rest energy mc² . This radius is called the gravitational radius for the Sun.(a) Use this approach to show that Rg = GMS / c² .

Answers

It is proved for gravitational radius that Rg=GMs/c^2 .

Given,

The mass of sun = Ms

Sphere of radius = Rg

Sun collapses to a sphere such that the work required to remove a small mass (m) from the surface would be equal to its rest energy mc^2 .

The given radius (Rg) is called as gravitational radius for sun.

We know,

gravitational potential energy Ug = G ×Ms×m/Rg

given, the rest energy, E =mc^2

As it is given that work required to remove small mass is equal to rest energy,

thus, Ug=E

G×Ms×m/Rg = mc^2

Rg =GMs/c^2

Hence, it is proved for gravitational radius that Rg=GMs/c^2 .

What is gravitational potential energy?

Total work done in assembling bodies together,in their respective places, is called gravitational potential energy of the system.

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50 points if you answer these questions!
Please don't copy from other websites
1. How does heat added to a solid system cause it to melt into liquid form?
2. What is antifreeze, and how is it used?
3. Explain how frost forms.

Answers

1) Heat is added to a solid by exposing the solid to heat sources

2) The antifreeze is used to keep water liquid in winter

3) Frost is formed by the withdrawal of heat

How do you add heat to a solid?

We know that heat is that which leads to the existence of a temperature difference between two bodies. This the reason for a change in temperature of a body is the addition or the withdrawal of heat.

We could add heat to a body when we heat the body up by exposing the body to a source of heat. For instance, we add heat to food when we place the food on top of our gas cookers and light the gas cooker.

The antifreeze is used to decrease  the temperature at which water freezes. We know that addition of a solute would make pure water to freeze at a temperature that is less than zero degrees. This helps to keep the water in the liquid state at temperatures less than zero during winter.

Frost is formed when heat is withdrawn from a object thus that its temperatures decreases until it reaches the ice point.

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Answer:

1. When a solid is heated, it gains enough kinetic energy to break the force of attraction that holds it in a fixed shape, and it turns into a liquid.

2. The purpose of antifreeze is to transfer heat from a car's engine to a radiator without causing it to boil or freeze. The mixture raises the boiling point of water while decreasing its freezing point. Other chemicals in antifreeze protect the coolant passages in the metal radiator and engine from rust and corrosion.

3. When the temperature is freezing, water vapor condenses on the solid surface and condenses to produce dew, which eventually freezes.

Will the following pairs of atomic orbitals interact constructively, destructively, or with no net overlap if they approach along the indicated axis?.

Answers

If the atomic orbitals are oppositely charged and are out-of-phase combinations then they interact destructively.

In Chemistry, molecular orbital theory(MOT) indicates the design of electron movement in a molecule.

The theory also states that electrons have wave-like nature which occurs as a result of the combination of the atomic wavefunction.

Theory suggests that there are two types of orbitals in a molecule: bonding orbitals (BO) and anti-bonding orbitals(ABO).

More are the chances of molecule stability if the electrons are present in bonding orbitals rather than anti-bonding orbitals.

Molecular orbitals are produced by the overlapping of atomic orbitals. When only the crusts of waves overlap in molecule orbitals they form constructive interference while overlapping of troughs causes destructive interference.

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this average velocity results because she hikes for 6.44 km with an average velocity of 2.68 m/s, due west turns around, and hikes with an average velocity of 0.447 m /s, due east. how far east did she walk?

Answers

0.81 km far east she walked.

What do you mean by average velocity?

The ratio of the sum of quantities to the entire number of quantities is what is simply meant by the word "average." In Physics, an alternative strategy is used. Let's first define velocity precisely as well as speed and how the two are related before moving on to average velocity. The change in location of an object with respect to time is referred to as its speed. On the other hand, velocity is nothing more than the speed that is specified in relation to the direction that an item travels. For now, let's return to the average velocity before we get into further detail regarding the distinction between speed and velocity.

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Collin is making s’mores by a campfire. He takes a graham cracker that has a mass of 7 grams and adds a chocolate candy bar that has a mass of 10 grams. He places a roasted marshmallow with a mass of 2 grams on top of the chocolate bar. Describe how Collin can determine the mass of the s’more using this information.

Answers

Collin can use stoichiometry chemistry to determine the mass of the s'more using this information.

The study of quantitative ratios or relationships between two or more substances undergoing a physical change or a chemical change is known as stoichiometry (chemical reaction). The word is derived from the Greek words "element" and "metron" in the Greek language (meaning "to measure"). Calculations involving stoichiometry typically involve the mass or volume of products and reactants.

The law of conservation of mass, which holds that matter cannot be generated or destroyed but can only be changed from one form to another, is explained by the basic mathematical principle of stoichiometry. A chemical reaction needs a balanced stoichiometry in order to start and proceed to completion.

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photon strikes the surface of tungsten and an electron is emitted. what is the maximum possible speed of the electron?

Answers

Answer: The maximum possible speed v is √2(  hν - Ф  ) / m

Explanation: You could be referring to the provided explanation, despite the fact that the question isn't comprehensive. When a photon collides with the surface of any metal, it transmits all of its energy to the electron in the atom. The collision causes the electron to travel with a certain amount of kinetic energy. This is referred to as the photoelectric effect. The maximum kinetic energy is calculated using Einstein's equation for the photoelectric effect:

K.E. = hν - Ф

½ mv² = hν - Ф

Hence the maximum possible speed is:

v = √2(  hν - Ф  ) / m

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An alien spaceship traveling at 0.600 c toward the Earth launches a landing craft. The landing craft travels in the same direction with a speed of 0.800 c relative to the mother ship. As measured on the Earth, the spaceship is 0.200 ly from the Earth when the landing craft is launched.(a) What speed do the Earth-based observers measure for the approaching landing craft?

Answers

The speed does the Earth-based observers measure for the approaching landing craft is 1.016 times the speed of light.

To find the answer, we have to know about the Lorentz transformation.

What speed do the Earth-based observers measure for the approaching landing craft?

It is given that, an alien spaceship traveling at 0.600 c toward the Earth, in the same direction the landing craft travels with a speed of 0.800 c relative to the mother ship. We have to find the speed do the Earth-based observers measure for the approaching landing craft.

Let us consider the earth as S frame and space craft as S' frame, then the expression for the value of speed of the approaching landing craft with respect to the earth frame as,

                  [tex]V_x=V_x'(1-\frac{VV_x}{c^2} )+V\\where,\\V_x'=0.8c\\V=0.6c[/tex]

Substituting values, we get,

             [tex]V_x=0.8c(1-\frac{0.8c*0.6c}{c^2} )+0.6c=1.016c[/tex]

Thus, we can conclude that, the speed does the Earth-based observers measure for the approaching landing craft is 1.016 times the speed of light.

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in a machine shop, a hydraulic lift is used to raise heavy equipment for repairs. the system has a small piston with a cross-sectional area of 0.045 m2 and a large piston with a cross-sectional area of 0.239 m2 . an engine weighing 2000 n rests on the large piston. what force must be applied to the small piston in order to lift the engine? answer in units of n.

Answers

The force applied to the small piston in order to lift the engine would be 376.56 N.

What is pressure?

The total applied force per unit of area is known as the pressure.

The pressure depends both on externally applied force as well the area on which it is applied.

As given in the problem,

the cross-sectional area of the small piston =0.045 m2

the cross-sectional area of the large piston =0.239 m2

weight of the engine = 2000 N

By using the Pascal law,

Force /0.045 = 2000/0.239

Force = 376.56 N

Thus, the force applied on the small piston would be 376.56 N

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A table tennis ball with a mass of 0.003 kg and a soccer ball with a mass of 0.43 kg are both set in motion at 16 m/s. Calculate and compare the momenta of both balls.

Answers

Answer:

Momentum of tennis ball = 0.048

Momentum of soccer ball = 6.88

momentum of soccer ball is greater than that of tennis ball.

Explanation:

For table tennis ball,

Momentum of tennis the ball is given by,

Momentum = mass × volume

Momentum =  0.003 × 16

Momentum = 0.048

For table soccer ball,

Momentum of the soccer ball is given by,

Momentum = mass × volume

Momentum =  0.43 × 16

Momentum = 6.88

Thus, momentum of soccer ball is greater than that of tennis ball.

The rest energy of an electron is 0.511MeV. The rest energy of a proton is 938MeV. Assume both particles have kinetic energies of 2.00MeV. Find the speed of (b) the proton.

Answers

The speed of proton is 0.063c given that the rest energy of an electron is 0.511MeV and the rest energy of a proton is 938MeV, with both particles having kinetic energies of 2.00MeV.

From the data given,

Rest energy of an electron = 0.511MeV

Rest energy of a proton = 938MeV

Kinetic energies (K) = 2.00MeV

Using the equation.

γ=K/E_0 +1      (1)

Where, γ represents the ratio of total energy to the rest energy of the particle

γ=2.00MeV/938MeV+1  

γ=0.002+1

γ=1.002

γ can also be derived as shown below;

γ=1/(√1-v^2/c^2)

Making v which is the velocity the subject of formula we get;

γ^2=1/(1-v^2/c^2)    by squaring both sides

Simplifying it we get;

1/γ^2 =1-v^2/c^2  

v^2/c^2 =1-1/γ^2  

v/c=√1-1/γ^2  

v=√1-1/γ^2 ×c     (2)

Putting the values into equation 2 we have;

v=√1-1/〖1.002〗^2 ×c

v=√1-0.996×c

v=√0.004×c

v=0.063×c

v=0.063c

The speed of proton is 0.063c.

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john needs to measure the brightness of a light bulb using the metric system. in which unit does he express his measurement? candela candela meter meter liter liter kilogram

Answers

john needs to measure the brightness of a light bulb using the metric system, in candela he expresses his measurement.

What is metric system?

The decimal standard for measuring is a globally perceived decimalized arrangement of estimation. It is in far and wide use, and where it is taken on, it is the just or most normal arrangement of loads and measures. Decimal standard can be involved by a few groups all around the world as a solitary method for estimating the amounts. This will make them to effectively think about their works. The Decimal standard for measuring was first embraced in France, and essentially every country on the planet currently utilizes it. Be that as it may, for reasons unknown, America hasn't gotten the update yet. The decimal standard gives units of estimation to remove, volume, mass, time, and temperature. It constructs these units utilizing a fundamental unit and a bunch of prefixes. The accompanying rundown shows five significant essential units in the decimal standard.

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Answer:

A. candela

Explanation:

I did a quiz with this question.

A train is climbing a gradual hill. The weight of the train creates a downhill force of 150,000 newtons. Friction creates an additional force of 25,000 newtons acting in the same direction (downhill). How much force does the train’s engine need to produce so the train is in equilibrium.

Answers

The force produced by the train's engine will be 175000N.

Force is an external agent that has the power to alter an object's state of motion or rest. In a brief, force is a vector quantity that's also defined as a push or pull exerted on an object as a result of the object's contact with another object. The Newton (N) is the unit of force F.

F = ma

Here, F  is force, m is mass and a is acceleration of the object.

We are given here,

The force by the train weight = [tex]Fw[/tex] =  150,000N

The force creates by the friction = [tex]F_{f}[/tex] = 25,000N

Thus , to get the total force of the train's engine by adding force by weight and force by friction is given as,

[tex]F_{t} = F_{w}+ F_{f}[/tex]

Then for getting total force of the train's engine putting above values in the expression ,

[tex]F_{t} = 150,000 N +25,000N\\F_{t} = 175,000N[/tex]

Hence, the train’s engine has to produce 175000N force to become in equilibrium.

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At what temperature is the temperature in degrees fahrenheit equal to twice the temperature in degrees celsius?.

Answers

The temperature in degrees Fahrenheit is 320 equal to twice the temperature in degrees Celsius.

What is a temperature scale?

The measurement of temperature as a physical quantity. In order to measure temperature, empirical scales take into account useful and trustworthy factors like the freezing and boiling temperatures of water.

The temperature will be solved as below:-

F = 2C

The temperature in degree centigrade is:-

C = ( 5 / 9 ) ( F - 32 )

Put the value in the equation above:-

F = 2 { 5 / 9 [ F -32 ]}

F = ( 10 / 9 ) [ F - 32 ]

( 9 / 10)F  = F - 32

( 9 / 10)F - F = 32

( -1 / 10)F = -32

F = 320°

Therefore, the temperature in degrees Fahrenheit is 320 equal to twice the temperature in degrees Celsius.

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The compounds that make up
plastic are ___________
because they contain carbon and
hydrogen

Answers

Answer:

ethylene

Explanation:

ethylene is a compound consist of two double bonded carbon atom and four hydrogen atoms at room temperature is a gas

Answer:

Ethylene

Explanation:

Because Ethylene is a simple molecule composed of two double-bonded carbon atoms and four hydrogen atoms. It's a gas at room temperature. Ethylene molecules can be chemically bonded, end to end, to form a polymer named polyethylene.

A boy walks 25 meters north along a sidewalk before realizing that he has walked in the wrong direction. He turns around and walks 48 m south. What is the distance he traveled?

Answers

I think 73 if im correct if you add it all up 48+25 is 73
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